Grinding-wheel guard.



W. STONE.

GRINDING WHEEL GUARD. APPLIGATION FILED 13110.11, 1911.

1,042,61 8, Patented Oct. 29, 1912.

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WILLIAM STONE, OF MILWAUKEE, WISCONSIN.

GRINDING-WHEEL GUARD.

Specification of Letters Patent.

Patented @ct. 28 11912.

Application filed December 11, 1911. Serial No. 665,100.

To all whom it may concern:

Be it known that I, TILLIAM STONE, a citizen of the United States, andresident of ltiilwaukee, in the county of Milwaukee and State ofWisconsin, have invented certain new and useful Improvements inGrindinglVheel Guards; and I do hereby declare that the following is afull, clear, and exact description thereof.

lily invention consists inwhat is herein particularly set forth withreference to the accompanying drawings and pointed out in the claims ofthis specification, its object being to provide for ready attachment togrinding-machines of grinding-wheel guards similar to the one disclosedin Letters Patent No. 953,496, granted to me March 29, 1910, and also toprovide for connection of each guard with a dust-exhaust in such amanner as not to interfere with rotary adjustment of said guard.

Figure 1 of the drawings represents a side elevation of a grinding-wheelguard in accordance with my invention partly in section, its applicationto a grinding-machine and its connection with a dust-exhaust so as notto interfere with its rotary adjustment being illustrated. Fig. 2represents a sectional view of the guard and illustrates supportingmeans for the same partly in sec tion, this view being indicated by line22 in Fig. 1.

Referring by numerals to the drawings, 8 indicates the stand of agrinding-machine, and 4 the grinding-wheel of the machine held rigid ona driven-arbor 5 between clamp-collars thereon. The inner clampingcollar 6 abuts a shoulder of the arbor and the outer clamping-collar 7is opposed by a nut 8 run on the arbor.

Tncasing the grinding wheel and free of the arbor, is a hood 9, having aremovable ide 9 secured in place by screws 10, the

front of said hood being open to said wheel.

The outer side of the hood is shown provided with a pair of parallelguides 11 for the heads of bolts 12, these guides being substituted forthe bolt-slots shown in the Letters ?jatent aforesaid, that also showsthe fixed and removable sides of the hood reversed to the showingherewith. The bolts extend through arms 13 of a spider, and clamp-nuts 11 are run on the outer ends of said bolts against the spider-arms, thesearms being preferably recessed to engage the bolt-head guides 11aforesaid. The hub 15 of the spider is recessed to clear the nut 8 onthe arbor 5, and it may be bored to afford clearance for the said arborwhen the same is of greater length outward from the grinding-wheel thanis herein shown. The outwardly extending portion of the spider-hubengages the split-head 16 of a post 17 having a split-foot 18 engaging astem of a bracket 19 bolted to the machine stand, a spacing block 20being interposed between said bracket and stand. The bracket may be ofany suitable form attachable to any con venient portion of the machinestand, or the post may be secured to any convenient support and engagedwith the spider-hub. By means of screws 21, the head and foot of thepost. 17 are made to grip the bracket and spider-hub respectively, andsaid post in connection with said bracket constitutes a support for saidspider-hub and the wheelguard hood adjustably secured thereto.

The guardhood is provided with a longitudinally slotted slide 22 held inadjusted position by a set-screw to regulate the front opening in saidhood. as in the Letters Patent aforesaid. A work-rest 23 is also shownbolted to the guard-hood. The guard-hood is adjustable in connectionwiththe spider to compensate for wear of the grindingwheel similar to whatis specified in my me vious patent, and said hood is provided with anexhaust-aperture in which is fitted a branch 24: of a pipe 24 intelescopic engagement with another pipe 25 having a branch 25' thereofin pivotal engagement with a wind trunk 26 through which to exhaust dustfrom said hood. The telescopic connection of the pipe 24 with the pipe25 in pivotal connection with the wind-trunk 26 permits rotaryadjustment of the guardhood to present the opening therein to thegrinding-wheel at various points of the periphery of said Wheel.

1 claim:

1. The combination of a support, a post having a split foot engaging thesupport, a spider having the hub thereof engaging a split head of thepost, a grinding wheel guard-hood attached to the spider, and means forclampin said post on said support and spider-hu 2. The combination of asupport, a post having a split-foot engaging the suppert, a

spider having the hub thereof engaging a spiit head 011? the post, agriniiing-wheei I spider is engageci, and a support to which guarriheociadjustahiysecured to the spider, v the post is secured. and means forclamping said post on said In testimony that I claim the foregoingsupport and spider-hub. I have hereunto set my hand at Milwaukee 5 3.The combination of a grinding-Wheel in the county of Milwaukee and Stateof 15 guard-heed provided with side guides, bolts I/Visconsin in thepresence of two Witnesses. having their heads engaging sald guides, a lWILLIAM SIGNE- spider having arms thereof engaged by the I Witnesses:hoits nuts on said belts in 0 pesition to the CHAS, L. Bons'r,

10 spider-arms, a post With which a hub of the G120. M. RUssELL.

